1variable_requires 2----------------- 3 4Disallowed since version 3.0. See CMake Policy :policy:`CMP0035`. 5 6Use the :command:`if` command instead. 7 8Assert satisfaction of an option's required variables. 9 10:: 11 12 variable_requires(TEST_VARIABLE RESULT_VARIABLE 13 REQUIRED_VARIABLE1 14 REQUIRED_VARIABLE2 ...) 15 16The first argument (``TEST_VARIABLE``) is the name of the variable to be 17tested, if that variable is false nothing else is done. If 18``TEST_VARIABLE`` is true, then the next argument (``RESULT_VARIABLE``) 19is a variable that is set to true if all the required variables are set. 20The rest of the arguments are variables that must be true or not set 21to ``NOTFOUND`` to avoid an error. If any are not true, an error is 22reported. 23